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  Currently, the samarium cobalt magnet mainly has two compositions, i.e. SmCo5 and Sm2Co17, and is a magnetic material made by matching samarium, cobalt and other metal rare earth materials, smelting into alloy, smashing, pressing and sintering. It has high magnetic energy product and low temperature coefficient. Its maximum working temperature can reach 350℃, its negative temperature is unlimited, and when the working temperature is above 180℃, its temperature stability and chemical stability exceed those of Nd-Fe-B permanent magnet material.




  • Introduction
  • Physical property
  • Diagram
  • Production process
  • Application
  • ●It is manufactured with powder metallurgic method, and its chemical composition is -SmCo5 and Sm2Co17.

    ●It is extremely solid and brittle.

    ●It has high-resistant demagnetization.

    ●It has excellent corrosion resistance.

    ●The cost is high due to limited raw material.

    ●It has good temperature stability.

  • Curie temperature Tc 800-850 Coefficient of thermal expansion C// 1/℃ ~8×10-5
    density D g/cm3 8.3-8.5 C⊥ 1/℃ ~11×10-5
    Recoil permeability μrec 1.00-1.05 bending strength N/m2 ~1.5×108
    Maximum use temperature T.max 350 compressive strength N/m2 ~8×108
    Resistivity Ω.cm ~8.6×10-5 tensile strength N/m2 ~3.5×107
    Webster Hardness Hv 500-600 Young's modulus N/m2 ~1.2×1011
    Thermal conductivity W/mK ~12 Magnetic field kA/m ≥1600



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